CALIFORNIA DRUNK BICYCLE ACCIDENTS: Is it against California law to ride a bicycle under the influence of alcohol or drugs?

Yes.

Alcohol and Drugs (CVC 21200.5):   It is against the law to ride a bicycle while under the influence of alcohol or drugs.

You can be arrested for DUI (Driving under the Influence) and it applies to both alcohol or drugs.

More Legal Questions About Pedestrian & Bicycle Accidents?

Do you have more legal questions about car & motorcycle accident cases?  Return to the Pedestrian & Bicycle Accidents in California Frequently Asked Legal Questions page.